EP0199239B1 - Procédé de traitement ultérieur en plusieurs temps de câbles de fibres avançant de façon continue et appareils nécessaires à l'exécution de ce procédé - Google Patents

Procédé de traitement ultérieur en plusieurs temps de câbles de fibres avançant de façon continue et appareils nécessaires à l'exécution de ce procédé Download PDF

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Publication number
EP0199239B1
EP0199239B1 EP86105094A EP86105094A EP0199239B1 EP 0199239 B1 EP0199239 B1 EP 0199239B1 EP 86105094 A EP86105094 A EP 86105094A EP 86105094 A EP86105094 A EP 86105094A EP 0199239 B1 EP0199239 B1 EP 0199239B1
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EP
European Patent Office
Prior art keywords
sliver
width
rollers
tow
crimping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86105094A
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German (de)
English (en)
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EP0199239A2 (fr
EP0199239A3 (en
Inventor
Wolfgang D.I. Bäcker
Wolfram Dr. Wagner
Günther Dr. Hahn
Ralf Dr. Miessen
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Bayer AG
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Bayer AG
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Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0199239A2 publication Critical patent/EP0199239A2/fr
Publication of EP0199239A3 publication Critical patent/EP0199239A3/de
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl

Definitions

  • Continuous threads (fiber cables) spun from solvent and joined to form ribbons of many individual filaments go through a series of post-treatment stages before they are passed on to the secondary spinning mill, that is to say in the yarn production.
  • the essential stages are washing to remove residual solvent, stretching, drying, crimping, crimp fixing and cooling.
  • a sliver of a certain width has been divided into several narrow slivers after washing and drying and each crimped in its own crimping chamber, the crimping chamber not being arranged next to each other but staggered one behind the other for reasons of space, and also due to the different dwell time of the ribbons between Dryer and crimping unit, unevenly crimped sub-tapes are accepted, so it is now endeavored to use only a crimping apparatus for a certain cable thickness in the form of a wide ribbon in order to achieve an improvement in product quality, in particular a more uniform product quality in terms of crimping, lateral adhesion of the cable, achievable card speed, grip and dyeability, to name just a few essential parameters.
  • DE-A 2 224 850 describes a device for sliver reduction in which, for reasons of the operability of the upper rollers 2 and 3 (see FIG. 1) Possibility of vertical band reduction is limited. It is therefore carried out in two stages between rolls 1 and 3 or 4 and 2. 4 rolls are required in each case for further belts to be installed, although for reasons of space it is not possible to shorten more than 3 belts. Two separate machine frames are required for the roller arrangements.
  • a solution to the problem according to the invention can be achieved, surprisingly, if the fiber cable is guided in compliance with certain process and device parameters, starting from the dryer outlet via a device for reducing the bandwidth, optionally a steaming unit, a stuffer box crimp, a cooling belt and optionally a cutting edge or a tearing machine.
  • the invention therefore relates to a process for the aftertreatment of washed and dried fiber cables with a minimum mass of 250 ktex by crimping, fixing, cooling (and optionally cutting or tearing), characterized in that the bandwidth of the cable running out of the dryer is covered with an occupancy density of at most 5 ktex / cm reduced by at least 50% of the original bandwidth with a corresponding increase in the packing density, in a stuffer box crimping device at a stuffer box pressure of 1.5 N / cm2 to 6.0 N / cm2 and a stuffer box temperature of 80 to 95 ° C curls, the curl fixed in or immediately after the stuffer box, the cable is placed on the surface of an air-permeable conveyor belt, where it blows or sucks air through the fiber package and conveyor belt (and then, if necessary, feeds the cable to a tear converter or a cutting machine).
  • the bandwidth of the cable can be reduced using inclined rods over which the sub-bands are guided.
  • a new installation using rollers is preferably used.
  • the sliver to be reduced in width is removed from the take-off mechanism (a) in the form of at least two, preferably equally strong individual strips, the individual strips are guided over separate rollers (b 1), (b 2) etc. and one above the other on a roller (c) united a band of reduced width, the axis of the roller (a) with the axis of at least one of the rollers (b1), (b2) etc. includes an angle of 1.5 to 7 °.
  • the "laying" of the slivers on a common axis is achieved by pivoting the rollers (rollers) b1 and b2, the effect being exploited that it is only a possible track axis for the sliver run there, namely the shortest distance from the deduction trio via role b1 or b2 to role c. Only this axis provides stable tracking, while all other tracks in the sliver have lateral forces that remain effective until the stable axis is reached again. If the rollers b 1 and b 2 are adjusted about their pivot point, the belt moves by the same angular amount in the corresponding direction. When adjusting the rollers against each other, it is thus possible to adjust the two belts exactly one above the other and on the central axis of the crimping device.
  • the sliver is halved in width, that is divided into two sub-bands of the same width, which are guided over rollers (b1) and (b2) and combined on the roller (c), the axes of the rollers (b1) and (b2 ) with the axis of the roller (a) include an equally large but oppositely directed angle of 1.5 to 7 °, preferably 2 to 5 °.
  • the slivers to be cooled are paneled on the conveyor belt with an occupancy of 10-15 kg / m2.
  • the cooling capacity of a 10 m long and 40 cm wide cooling belt is up to 4,000 kg / h of fiber material.
  • the air which is sucked or blown through the fiber package expediently has a temperature which is as low as possible, in any case a temperature which is below that of the fiber sliver to be cooled.
  • the air is preferably at ambient temperature.
  • the cooled cable is preferably fed to a cutting edge of a suitable design.
  • the cutting edge is preferably a rotor cutting edge.
  • the air-permeable conveyor belt can also serve as a cooling belt for the crimped fiber package coming from the crimping device.
  • the fiber package By driving the take-off process, the fiber package is loosened and drawn into a strand of crimped threads at a certain point.
  • the dissolved fiber cable is held within the suction path with a force proportional to the negative pressure, the fiber bandwidth and the fiber ribbon length of the dissolved fiber ribbon. If this force is equal to the setpoint specified in the tensile load cell, the drive of the puller pulls the fiber cable off at a uniform speed. If the force with which the differential pressure tries to hold the fiber cable on the conveyor belt falls below the specified target value, the strain gauge regulates the drive of the pull-off device in such a way that the thread cable is pulled off at an increased speed. This shifts the point at which the fiber bundle is released against the direction of the thread running on the conveyor belt.
  • the point at which the fiber package is broken down into a fiber band comes to lie within a certain range, the point shifting only insignificantly during operation.
  • rollers (a) and (b) at the same height were 4.5 m.
  • Roll (b2) was placed 40 cm above the extension of the horizontal through (a) and (b1) and above a point 40 cm away from (b1).
  • Roll (c) was placed 80 cm below a point on the horizontal extension through (a) and (b1) which was 20 cm from (b1).
  • the angle ⁇ was 2.5 °.
  • the slivers were heated to 90 - 95 ° C using saturated steam.
  • the crimping roller pressure was 600 N / cm
  • the chamber width was 350 mm
  • the stuffer box pressure was 5 N / cm2.
  • the crimped fiber tapes left the crimping device as an endless package ("cake") with a stuffer box width and approx Cooler and fuser supplied.
  • the folding factor (quotient of tape entry speed into the crimp and tape exit speed from the crimp) of the cake was 1:10.
  • the "cake” was taken from the conveyor belt of the cooling and fixing apparatus, the belt speed being 12% greater than the speed of the crimp cake pushed out of the crimping machine. This improved the air permeability of the fiber package.
  • the fiber material reached ambient temperature (cooling air approx. 12,000 m3 / h) and was now drawn back onto the stretched strip length.
  • a tensile force of 4 N / ktex built up in the belt, with which it was fed to a rotor cutting edge, which cut the material into stacks at a speed of approx. 68 m / min.
  • the width of the throat of the knife ring was 80 mm, the cutting ring diameter approx. 1,200 mm.
  • the cut material was steamed and then packed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (3)

  1. Procédé de traitement complémentaire de faisceaux lavés et séchés de fibres ayant une masse minimale de 250 ktex par ondulation, fixation et refroidissement, caractérisé en ce qu'on diminue la largeur de la bande du faisceau sortant du séchoir et ayant une densité d'accumulation au maximum de 5 ktex/cm, d'au moins 50% de la largeur initiale de la bande avec élévation correspondante de la densité de tassement, on l'ondule dans une chambre d'écrasement sous une pression de 1,5 à 6 N/cm² et sous une température de 80 à 95°C, on fixe l'ondulation dans ou immédiatement à la suite de la chambre d'écrasement, on dépose le faisceau sur la surface d'un ruban transporteur perméable à l'air et on y insuffle ou aspire de l'air de refroidissement à travers le paquet de fibres et le ruban transporteur.
  2. Procédé selon la revendication 1, suivant lequel on diminue la largeur de la bande en retirant la bande de fibres, dont la largeur doit être réduite, du mécanisme de prélèvement (a) sous forme d'au moins deux bandes individuelles, on fait passer les bandes individuelles sur des rouleaux séparés (b₁, b₂, etc...) et on les réunit en une bande en les superposant sur un autre rouleau (c), l'axe du rouleau (a) inscrivant avec l'axe d'au moins l'un des rouleaux (b₁), (b₂), etc..., un angle de 1,5 à 7°.
  3. Procédé selon la revendication 1, suivant lequel on dirige le faisceau de fils sur le convertisseur ou la machine de découpage sous une tension constante en transportant le paquet de fibres sur un ruban transporteur sans fin, perméable à l'air, en le soumettant sur le ruban transporteur à une dépression et en le défaisant ensuite en une bande étirée de fibres sur laquelle agit, dans la plage de dépression et proportionnellement à la longueur d'étirage, une force de frottement qui produit dans les fils une tension mesurée par un dynamomètre de traction et comparée à une consigne prescrite, la commande subissant un freinage en cas de dépassement vers le haut de la consigne et une accélération en cas de dépassement de cette consigne vers le bas.
EP86105094A 1985-04-25 1986-04-14 Procédé de traitement ultérieur en plusieurs temps de câbles de fibres avançant de façon continue et appareils nécessaires à l'exécution de ce procédé Expired - Lifetime EP0199239B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853514863 DE3514863A1 (de) 1985-04-25 1985-04-25 Verfahren zur mehrstufigen nachbehandlung von fortlaufend transportierten faserkabeln und dazu erforderliche vorrichtungen
DE3514863 1985-04-25

Publications (3)

Publication Number Publication Date
EP0199239A2 EP0199239A2 (fr) 1986-10-29
EP0199239A3 EP0199239A3 (en) 1988-09-21
EP0199239B1 true EP0199239B1 (fr) 1991-12-27

Family

ID=6269034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105094A Expired - Lifetime EP0199239B1 (fr) 1985-04-25 1986-04-14 Procédé de traitement ultérieur en plusieurs temps de câbles de fibres avançant de façon continue et appareils nécessaires à l'exécution de ce procédé

Country Status (5)

Country Link
US (1) US4701980A (fr)
EP (1) EP0199239B1 (fr)
JP (1) JPS61252327A (fr)
DE (2) DE3514863A1 (fr)
ES (1) ES8705057A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310240A3 (fr) * 1987-09-30 1991-01-16 Imperial Chemical Industries Plc Câble de filaments
WO2008022947A1 (fr) * 2006-08-19 2008-02-28 Oerlikon Textile Gmbh & Co. Kg procédé et dispositif de fabrication de fibres empilées à partir d'une bande de fibres frisées
DE202007006816U1 (de) * 2007-05-11 2008-09-18 Coroplast Fritz Müller Gmbh & Co. Kg Handeinreißbares Gewebe-Klebeband

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1893050A (en) * 1932-01-04 1933-01-03 Davis & Furber Tape condenser
US2713182A (en) * 1951-05-31 1955-07-19 Proctor & Schwartz Inc Intermediate feed device for carding machines
NL264284A (fr) * 1960-05-23
US3216064A (en) * 1963-04-23 1965-11-09 Du Pont Method and apparatus for drawingframe blending of slivers in the preparation of yarncomposed of different lengths of fibers
US3248103A (en) * 1964-02-11 1966-04-26 Du Pont Apparatus for stacking a plurality of ribbon-like filament bundles
US3266692A (en) * 1964-04-06 1966-08-16 Monsanto Co Tow stacking assembly
US3578551A (en) * 1964-07-13 1971-05-11 Celanese Corp Splittable tow
US3503100A (en) * 1966-09-08 1970-03-31 Eastman Kodak Co Method of processing large denier tow
DE2224850A1 (de) * 1972-05-20 1973-11-29 Vepa Ag Vorrichtung zum auslenken von bahnfoermigen guetern
US3887969A (en) * 1973-09-14 1975-06-10 Phillips Petroleum Co Apparatus and method for cooling a crimped tow
CH576633A5 (fr) * 1974-03-08 1976-06-15 Rieter Ag Maschf
JPS60476B2 (ja) * 1977-02-14 1985-01-08 鐘淵化学工業株式会社 捲縮トウ塊の連続熱処理方法ならびにその装置
JPS595689B2 (ja) * 1977-07-29 1984-02-06 東洋紡績株式会社 合成繊維トウの形成方法
DE3200271A1 (de) * 1982-01-07 1983-07-21 Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München Verfahren und vorrichtung zum thermischen fixieren von gestreckten, gekraeuselten endlosfaeden aus thermoplastischem kunststoff
US4475271A (en) * 1982-04-29 1984-10-09 Chicopee Process and apparatus for producing uniform fibrous web at high rate of speed
GB2138578B (en) * 1983-04-19 1986-08-28 Haigh Chadwick Ltd Fibre metering arrangement

Also Published As

Publication number Publication date
JPS61252327A (ja) 1986-11-10
EP0199239A2 (fr) 1986-10-29
ES8705057A1 (es) 1987-04-16
DE3683076D1 (de) 1992-02-06
DE3514863A1 (de) 1986-11-06
US4701980A (en) 1987-10-27
EP0199239A3 (en) 1988-09-21
ES554330A0 (es) 1987-04-16

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